Learn how futures contracts work, why they expire, and how to choose the right ones for trading.
What is the CME?
The Chicago Mercantile Exchange (CME) is one of the world's largest futures exchanges. When you trade popular instruments like ES (S&P 500), NQ (Nasdaq), or GC (Gold), you're trading contracts that are managed by the CME Group.
How Futures Contracts Work
Contract Basics
Unlike stocks that you can hold forever, futures contracts have expiration dates. Think of them like this:
Each contract represents a specific delivery month - Like December 2025 or March 2026
Contracts expire and stop trading - You can't trade expired contracts
New contracts are continuously created - There's always a "next" contract coming
Contract Months and Codes
The CME uses letter codes to represent different months:
Month | Code |
January | F |
February | G |
March | H |
April | J |
May | K |
June | M |
July | N |
August | Q |
September | U |
October | V |
November | X |
December | Z |
Reading Contract Symbols
Example: ESH25
- ES = S&P 500 E-mini futures
- H = March (using the month code table above)
- 25 = 2025
So ESH25 = S&P 500 March 2025 contract
Contract Lifecycle
1. Front Month (Most Active)
- Highest volume and liquidity
- Tightest spreads
- Best for most traders
- Most current pricing
2. Back Months (Further Out)
- Lower volume
- Wider spreads
- Harder to get good fills
- Price differences from front month
3. Expiration and Rolling
What happens when contracts expire:
- Trading stops on expiration date
- You must "roll" to the next active contract
- Professional traders roll before expiration
- Avoid trading contracts close to expiration
Why This Matters for Your Trading
Liquidity Issues
Trading expired or near-expired contracts can cause:
Poor fill prices
Wide bid-ask spreads
Difficulty entering/exiting positions
Slippage on larger orders
Contract Selection Best Practices
✅ Trade the front month contract (highest volume)
✅ Check expiration dates before opening positions
✅ Roll positions before expiration if holding longer-term
✅ Use CME calendars to verify active contracts
❌ Don't trade contracts within 1-2 weeks of expiration
❌ Don't assume all months have the same liquidity
❌ Don't roll backwards (from Dec to Nov - always forward)
Common Contract Expiration Schedule
Quarterly Contracts (Most Liquid)
ES, NQ, RTY, YM: March (H), June (M), September (U), December (Z)
Monthly Contracts
Some products trade every month, others only quarterly
Serial Expiration
Contracts expire on the 3rd Friday of the contract month (typically)
How to Stay Informed
1. Check CME Group Website
Official expiration calendars: https://www.cmegroup.com/tools-information/calendars/expiration-calendar.html
2. Monitor Your Platform
Most platforms show contract months
Look for volume indicators
Check expiration dates in contract details
3. Watch Trading Volume
High volume = good liquidity
Low volume = avoid these contracts
Volume typically shifts to next contract 2-4 weeks before expiration
Contract Rolling Strategy
When to Roll
1-2 weeks before expiration for most contracts
When volume starts shifting to the next month
Red Flags: Avoid These Contracts
Low volume (less than 1,000 contracts daily)
Wide spreads (more than 1-2 ticks)
Expiring within 2 weeks
Unusual pricing compared to other months
Limited market hours trading
Summary
Key Takeaways:
CME contracts expire and must be rolled.
Always trade the most liquid (front month) contracts.
Check expiration dates before trading.
Poor contract selection leads to bad fills and slippage.
Use official CME resources to verify contract status.
Need Help?
For specific contract expiration dates: Check the CME Group Calendar (https://www.cmegroup.com/tools-information/calendars/expiration-calendar.html)
Questions about contract selection? Contact our support team for guidance.